Titan's Shard

You and permanents you control have ward{2}.
Whenever a spell is countered, exile that spell
with a void counter, then put a void counter
on Titan's Shard.
{t}, Sacrifice Titan's Shard: Until the beginning
of your next end step, you may cast any number
of spells exiled with a void counter with mana
value X of less, where X is the number of void
counters on Titan's Shard.