#include <bits/stdc++.h> // {{{
// clang-format off
#pragma GCC optimize "O3,omit-frame-pointer,inline"
#pragma GCC target "tune=native"
#define ARG4(_1, _2, _3, _4, ...) _4
#define rep(...) ARG4(__VA_ARGS__, FOR, REP)(__VA_ARGS__)
#define REP(i, a) FOR(i, 0, a)
#define FOR(i, a, b) for (int i = (a); i < (int)(b); ++i)
#define rrep(...) ARG4(__VA_ARGS__, RFOR, RREP)(__VA_ARGS__)
#define RREP(i, a) RFOR(i, 0, a)
#define RFOR(i, a, b) for (int i = (b)-1; i >= (int)(a); --i)
#define ALL(c) (c).begin(), (c).end()
#define TEN(n) ((ll)(1e##n))
#define pb emplace_back
#define mp make_pair
#define fi first
#define se second
#define USE1(T) template<typename T>inline
#define USE2(T, U) template<typename T,typename U>inline
#define mygc(c) (c)=getchar_unlocked()
#define mypc(c) putchar_unlocked(c)

template<typename T>using duo=std::pair<T,T>;
template<typename T>using vec=std::vector<T>;
using ll=long long;
using pii=duo<int>;
USE2(T,U)bool chmax(T&x,U a){return x<a&&(x=a,1);}
USE2(T,U)bool chmin(T&x,U a){return a<x&&(x=a,1);}
USE1(T=int)T in(){T x;std::cin>>x;return x;}
USE1(T=int)vec<T>in(int n){vec<T>v;v.reserve(n);rep(i,n)v.pb(in<T>());return v;}
USE1(T=int)vec<T>in(int n,T a){vec<T>v;v.reserve(n);rep(i,n)v.pb(in<T>()+a);return v;}
USE1(T)vec<std::pair<T,int>>enume(const vec<T>&x,int s=0){int N=x.size();vec<std::pair<T,int>>v;v.reserve(N);rep(i,N)v.pb(x[i],s+i);return v;}
USE1(T)vec<T>ndvec(T v,int n){return vec<T>(n,v);}
USE2(T,...Ts)auto ndvec(T v,int n,Ts...ns)->vec<decltype(ndvec(v,ns...))>{return ndvec(ndvec(v,ns...),n);}
USE1(T)void pr(T x){std::cout<<x<<'\n';}
USE2(T,...Ts)void pr(T x,Ts...xs){std::cout<<x<<' ';pr(xs...);}
USE1(T=int)T rd(){T x=0,m=0,k;for(;;){mygc(k);if(k=='-'){m=1;break;}if('0'<=k&&k<='9'){x=k-'0';break;}}for(;;){mygc(k);if(k<'0'||'9'<k)break;x=x*10+k-'0';}return x;}
USE1(T=int)void wr(T x,char c='\n'){int s=0,m=0;char b[32];if(x<0)m=1,x=-x;for(;x;x/=10)b[s++]=x%10;if(!s)b[s++]=0;if(m)mypc('-');for(;s--;)mypc(b[s]+'0');mypc(c);}
// clang-format on
// }}}
struct IoSetup { // {{{
  IoSetup() {
    std::ios::sync_with_stdio(0);
    std::cin.tie(0);
    std::cout.precision(10);
    std::cerr.precision(10);
  }
} iosetup; //}}}
using namespace std;
const int inf = 1001001001;
const ll infl = 1001001001001001001ll;
const int dd[] = {0, 1, 0, -1, 0};

vec<int> G[100100];
bool danger[100100];
bool zombie[100100];

signed main() { //
  int N = in(), M = in(), K = in(), S = in();
  int P = in(), Q = in();
  auto C = in(K);
  for (int& c : C) {
    c--;
    zombie[c] = true;
  }
  rep(i, M) {
    int a = in() - 1, b = in() - 1;
    G[a].pb(b);
    G[b].pb(a);
  }
  rep(s, S) {
    static vec<int> nC;
    nC.clear();
    for (int c : C) {
      for (int u : G[c]) {
        if (danger[u]) continue;
        danger[u] = true;
        nC.pb(u);
      }
    }
    swap(C, nC);
  }

  using Edge = pair<ll, int>;
  auto dist = ndvec(infl, N);
  dist[0] = 0;
  priority_queue<Edge, vector<Edge>, greater<Edge>> pq;
  pq.emplace(0, 0);
  while (not pq.empty()) {
    auto e = pq.top();
    pq.pop();
    if (e.fi > dist[e.se]) continue;
    for (int u : G[e.se]) {
      if (zombie[u]) continue;
      ll d = e.fi + (danger[u] ? Q : P);
      if (chmin(dist[u], d)) pq.emplace(d, u);
    }
  }
  pr(dist[N - 1] - (danger[N - 1] ? Q : P));
  return 0;
}

Measured memory_bytes: 10500